Related Clues:

• Bomb of a bomb
• Total flop
• Failed bomb
• Zero, to Nero
• Fizzled firework
• Empty, as a set
• Fizzled firecracker
• Amounting to nothing
• Firecracker flop
• Misfire
• Bomb not bursting in air?
• It amounts to nothing
• Squat
• -- and void
• Not functioning